| 释义 |
diastema noun[ C ] anatomy specializeduk /ˌdaɪ.əˈstiː.mə/ us /ˌdaɪ.əˈstiː.mə/pluraldiastemas or diastematauk /ˌdaɪ.əˈstiː.mə.tə/ us /ˌdaɪ.əˈstiː.mə.tə/ a space between two teeth in the mouth: The extraction was performed and orthodontic treatment was conducted for closure of the diastema created. Small diastemata are present on either side of the third lower incisor, the lower canine, and the first lower premolar. The presence of supernumerary teeth can cause some negative effects for the patient, such as diastemas and permanent tooth impaction. No diastema is visible between the last symphysal alveolus and the next. SMART Vocabulary: related words and phrases Unaware be in the darkidiom be on another planetidiom benighted benightedly blind spot blindly foggy Goodness/God/Heaven/Christ knowsidiom imperceptive in blissful ignoranceidiom innumeracy innumerate insensate insensibly stump unattuned unawakened unaware unawareness unbeknownst |